Passive raft vs traditional (strip/trench) costs assesment
I've been back and forth on what foundations I would like to use on our plot and I am really keen on a passive insulated raft. I had originally liked the idea, but then went off it as assumed too expensive, then read more and believe it should theoretically should be cheaper/ less hassle but I have never quanitified this.
Hence I am going do a cost vs benefit analysis to see what the actual costs are and from there assess the benefit. E.g it might still be more expensive, but if it
@SuperJohnG I have SIP with a blockwork outer skin on an insulated raft foundation.
The way it worked for me is I first of all had a soil survey done to get a ground bearing capacity. Architectural Technician did my house design which I gave to SIP company and asked them for the point and line loads. They used their SE to get this for me (incl in cost of the SIP supply/install package).
I then contacted Tanners and provided him with the soil survey report and the line/p
